Here's what you'll need:
Note: Myra asked if the pom poms are from a fringe so I wanted to let everyone know that, yes, they are. Thanks myra!
Use fray check on the stem, twist it snugly so that you get a good base for the glue and thread to hold to. Let dry.
Dip the stem into the glue. Try not to get any on the pom pom or you'll have a mess. This is something I happen to know all about so you'll want to heed my warning.
Remove any excess glue with a toothpick. You don't want it too gloppy, just a nice covering.
Place one end of a 6" piece of the embroidery floss at the base of the stem.
Wind the floss into a loop at the top of the stem. Try to get the loop as small as you can and as flat against the top of the stem as possible.
Hold the pom pom in one hand, wind the floss back down to the bottom of the stem. Trim the floss and secure the end with a dab of glue. Feel free to mold the stem to get it into shape. (Works best while the glue is still damp.)